SB742NE
Installation of an Aerostat envelope, model W-140-2 (2-point system) and W-140-4 (point system). Held by Ronald T. Digiovanni, which holds 16 approved modifications in all. Last revised September 10, 2001. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Aerostar International
- Models
- S-55A
- Type certificate
- A15CE
- On this site
- Aerostar International Inc S-55 13 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.